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Sulfur, Strontium, Carbon, and Oxygen Isotopes of Calcium Sulfate Deposits in Late Carboniferous Rocks of the Loei-Wang Saphung (LWS) Area, Loei Province, Thailand
http://hdl.handle.net/2241/00154048
http://hdl.handle.net/2241/001540482607f580-5a79-4d35-ba50-070cfafc75d9
名前 / ファイル | ライセンス | アクション |
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Geo_8-229 (2.2 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2018-12-06 | |||||
タイトル | ||||||
タイトル | Sulfur, Strontium, Carbon, and Oxygen Isotopes of Calcium Sulfate Deposits in Late Carboniferous Rocks of the Loei-Wang Saphung (LWS) Area, Loei Province, Thailand | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Surakotra, Nusara
× Surakotra, Nusara× Promkotra, Sarunya× Charusiri, Punya× Maruoka, Teruyuki× Hisada, Ken-inchiro |
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著者別名 |
丸岡, 照幸
× 丸岡, 照幸× 久田, 健一郎 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Sulfate deposits of the Loei-Wang Saphung (LWS) area, northeastern Thailand, intercalated with carbonate and silicic clastic rock were analyzed for S, O, C, and Sr to determine the depositional environment, as well as the age of formation. Sulfate samples yielded average values of δ34S of 14.6‰, while the 87Sr/86Sr ratio of gypsum was 0.708282 and that of anhydrite was 0.708288. The carbonate layers yielded average δ18OPDB, and δ13C values of −12.5‰ and −0.1‰, respectively. Our results revealed that the LWS evaporite deposits were originally formed from seawater, and the relatively negative value of δ18O was a result of meteoric alteration during subaerial exposure of the sections. Comparing these isotopic values with the nearby Nakon Sawan sulfate deposits, the Sr isotopes showed slightly higher values with very mild variations. These isotopic values suggest that the LWS deposits were not affected by subsequent hydrothermal alteration by younger igneous dikes in this area. Therefore, some of these isotope signatures are considered to be primary features of the deposit, despite the fact that the deposit underwent anchizone to epizone metamorphism. The S and Sr isotope values support the depositional age of the LWS sulfate deposit in the Middle to Late Carboniferous. | |||||
書誌情報 |
Geosciences 巻 8, 号 7, p. 229, 発行日 2018-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2076-3263 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.3390/geosciences8070229 | |||||
権利 | ||||||
権利情報 | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | MDPI |